C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Bogs at 3K RPM????

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Old Jun 24, 2010 | 02:41 PM
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Default Bogs at 3K RPM????

This weekend I and replacing the whole exhaust minus the headers with MagnaFlow. I bought these because I think my cats may be stuffed but if not its still a nice upgrade. My problem is when the car get the pedal pushed to the floor it bogs and doesn’t get past 3K RPM. But if given a slow acceleration it does (Most of the time). If not the cats what else could this be?
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Old Jun 24, 2010 | 02:42 PM
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Also its a 87 auto with 118k miles. Other then this the car runs great.
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Old Jun 24, 2010 | 04:27 PM
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From: Glenbeulah Wi
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Low fuel pressure! Low load high RPM does not use as much fuel as high load high RPM, put a gauge on your fuel system and see if the pressure holds at least 42 PSI at WOT in drive. If the pressure drops you have found the problem.
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